CN114926986A - Roadside parking lot exit gate control method and system based on road vehicle flow - Google Patents
Roadside parking lot exit gate control method and system based on road vehicle flow Download PDFInfo
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- CN114926986A CN114926986A CN202210593291.4A CN202210593291A CN114926986A CN 114926986 A CN114926986 A CN 114926986A CN 202210593291 A CN202210593291 A CN 202210593291A CN 114926986 A CN114926986 A CN 114926986A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012806 monitoring device Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
- G08G1/0145—Measuring and analyzing of parameters relative to traffic conditions for specific applications for active traffic flow control
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
- G08G1/147—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas where the parking area is within an open public zone, e.g. city centre
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/149—Traffic control systems for road vehicles indicating individual free spaces in parking areas coupled to means for restricting the access to the parking space, e.g. authorization, access barriers, indicative lights
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Abstract
The invention discloses a road side parking lot exit gate control method and system based on road vehicle flow. The video monitoring device is used for monitoring road traffic flow and sending video data to the central processing system. The exit gate control equipment is used for receiving the control scheme given by the central processing system and controlling the exit of the roadside parking lot in real time. The central processing system judges the flow and density of the arriving traffic flow on the road according to the real-time video data, and inputs the flow and density into a traffic flow model for simulation, so as to obtain the critical value of the traffic flow rate which can be driven by the roadside under the condition of avoiding the main road congestion, and further give the maximum release rate of the exit gate of the roadside parking lot. The invention reduces the influence of vehicles driven into the roadside parking lot on the main road traffic from the perspective of traffic management control optimization, controls the release of the exit gate of the roadside parking lot in real time, and effectively improves the overall traffic efficiency of the road.
Description
Technical Field
The invention relates to a roadside parking lot exit gate control method and system based on road vehicle flow, and belongs to the technical field of traffic management control.
Background
In recent years, the quantity of automobiles kept in China is continuously increased, and the problem of traffic jam is increasingly serious. According to the data of the traffic administration of the ministry of public security, 76 city automobiles in China currently keep more than 100 thousands of automobiles, 34 city automobiles keep more than 200 thousands of automobiles, and 18 city automobiles keep more than 300 thousands of automobiles. The problem of urban traffic congestion is continuously aggravated due to the increase of the automobile holding amount, and according to a Baidu map, China urban traffic reports in quarter 2 of 2021, the traffic peak congestion ring ratio of current super-eighty-percent cities in China is aggravated.
Solving the problem of urban traffic congestion can generally be considered from three dimensions: control traffic demand, increase traffic supply, and enhance traffic management. Generally, in small and medium-sized cities, traffic supply is increased mainly through expanding roads to relieve congestion, and in large cities, traffic demands are controlled through number limit, license plate limit, purchase limit and other modes. Therefore, the research on the traffic management technology is less, and the research at home and abroad shows that the scientific traffic management control method can improve the traffic order of roads, thereby increasing the traffic capacity.
Disclosure of Invention
The invention aims to provide a roadside parking lot exit gate control method and system based on road traffic flow, which solve the problem of traffic jam caused by the increase of the number of motor vehicles and the limited road reconstruction, realize the monitoring of the influence of different roadside exit flow rates on the state of main road traffic flow, formulate a reasonable roadside exit gate control scheme, strengthen the management control of urban roadside exits, and improve the traffic operation efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: a roadside parking lot exit gate control method based on road vehicle flow comprises the following steps:
collecting video data on an upstream road section of an exit of a parking lot on the side of a main road;
identifying the flow and density information of the road traffic flow in real time according to the video data;
inputting the obtained flow and density information of the traffic flow into a traffic flow model to obtain the maximum number of vehicles which can be driven from the road side under the condition of avoiding the congestion of the main road;
and obtaining a control scheme of the exit gate of the roadside parking lot according to the number of vehicles which can drive into the road at most.
The method comprises the following steps:
step 1: the video monitoring device monitors the road traffic state in real time and sends video data to the central processing system;
and 2, step: the central processing system identifies the flow and the density of the road traffic flow at the moment according to the video data obtained by the video monitoring device;
and step 3: the central processing system inputs the flow and the density at the moment into a traffic flow model to obtain the maximum flow rate of the vehicles driven from the road side under the condition of avoiding traffic jam of the main road;
and 4, step 4: obtaining a release scheme of the roadside parking lot exit gate according to the maximum flow rate of roadside driving vehicles, and sending a control command to gate control equipment;
and 5: and the gate control equipment positioned at the exit of the roadside parking lot receives the control signal of the central processing system, and releases vehicles at the roadside exit into the main road according to the control scheme.
Further, in step 3 of the present invention, the traffic flow model used is a KKSW model based on three-phase traffic flow, and the implementation method thereof comprises:
1) judging lane changing conditions, namely judging whether the speed of the vehicle in front of the adjacent lane is greater than the current speed of the vehicle and meeting the safe distance conditions;
2) judging the synchronous flow interval, if the interval between the front vehicle and the rear vehicle is within the synchronous flow interval, continuously adjusting the speed of the rear vehicle to be matched with that of the front vehicle and having a certain probability of excessive acceleration, otherwise, gradually accelerating the rear vehicle to the expected speed under the condition that the front vehicle does not influence the rear vehicle;
3) if the distance between the front vehicle and the rear vehicle is smaller than the safety distance, the rear vehicle decelerates to the minimum speed capable of keeping safety;
4) and (4) stochastic slowing, namely, the vehicle decelerates automatically with a certain probability.
Furthermore, the system of the invention uses cellular automata to simulate and run the KKSW model.
According to the roadside parking lot exit gate control method based on the road vehicle flow, the invention provides a roadside parking lot exit gate control system based on the road vehicle flow, which comprises a video monitoring device, exit gate control equipment and a central processing system. The video monitoring device is used for monitoring road traffic and sending video data to the central processing system, and the exit gate control equipment is used for receiving a control scheme given by the central processing system and realizing real-time control at an exit of the roadside parking lot. The central processing system identifies the traffic flow and the density by using a video identification technology, inputs the traffic flow and the density into a traffic flow model, and obtains the maximum number of vehicles which can be driven from the side of the road under the condition of avoiding the congestion of the main road.
Furthermore, the roadside parking lot exit gate control system based on the road traffic flow comprises a video monitoring device and a plurality of gate control devices, wherein the video monitoring device is installed at the upper stream of a roadside exit of the main road, and the gate control devices are installed at the roadside parking lot exit.
And the central processing system utilizes a traffic flow model to simulate to obtain the maximum release rate of the roadside exit gate according to the flow and density data of the traffic flow identified from the video data, and obtains the roadside parking lot exit control scheme according to the release rate.
Has the advantages that:
1. the invention reduces the influence of the driving of vehicles at the exit of the parking lot at the roadside on the main road traffic flow from the perspective of traffic management control optimization, predicts the influence of the exit flow rates at different roadside on the main road traffic flow state by using a model simulation method on the basis of basic traffic flow data such as traffic flow, density and the like, and performs real-time exit flow rate control through the gate control equipment, thereby effectively improving the road traffic efficiency, and having the advantages of low cost, repeatability, easy acquisition of parameters and the like.
2. The invention aims at the problem that vehicles at the entrance and the exit of the road side converge into the main road to influence the main road traffic flow, thereby well improving the traffic efficiency of the road and reducing the congestion.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a schematic view of an installation position of a roadside entrance/exit signal control system considering a queuing length in the embodiment of the present invention.
Detailed Description
The device of the present invention will be described more fully hereinafter with reference to the accompanying drawings. The described embodiments are not intended to be all use cases of the inventive apparatus. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the device according to the invention without making any inventive step, fall within the scope of protection of the device according to the invention.
The roadside entrance and exit signal control system considering the queuing length and the control method thereof in the embodiment are set based on the roadside entrance and exit signal control method considering the queuing length, and include:
collecting video data on an upstream road section of an outlet of a parking lot on the side of a main road;
identifying the flow and density information of the road traffic flow in real time according to the video data;
inputting the obtained flow and density information of the traffic flow into a traffic flow model to obtain the maximum number of vehicles which can be driven from the road side under the condition of avoiding the congestion of the main road;
and obtaining a control scheme of the exit gate of the roadside parking lot according to the number of vehicles which can drive into the road at most.
In the example, the south-to-north direction of the south of the Liyuan (high lake road-Tianyuan west road) is taken as an example. The south of the Source of interest is a central isolated bidirectional four-lane in the south-north direction, the speed of the road is limited to 60km/h, and the east side of the road is provided with a large-scale enterprise entrance and exit.
In this example, the roadside entrance/exit signal control system considering the queuing length of the invention is applied to the position shown in fig. 2, and the system consists of a video monitoring device 1, a central processing system 2 and an exit gate control device 3. The video detection device 1 is used for monitoring the traffic state of a main road, sending video data to a central processing system 2, wherein the central processing system 2 is used for identifying traffic flow parameters such as traffic flow, density and the like, calculating the maximum traffic flow rate of vehicles driving into the main road from an exit of a roadside through traffic flow data and model simulation, then obtaining an exit gate control scheme according to the traffic flow rate, transmitting the control scheme to gate control equipment at an exit of a parking lot at the roadside, and the gate control equipment 3 is used for receiving a signal of the control scheme of the central processing system and releasing vehicles at the exit of the roadside into the main road according to the control scheme. As shown in fig. 2, the video monitoring device 1 is installed at the upstream of the main road side exit, the central processing system 2 is established at the traffic guidance center, and the 3-exit gate control equipment is installed at the roadside parking lot exit.
As shown in fig. 1, the control method of the roadside entrance/exit signal control system considering the queuing length in this example includes the following steps:
step 1: as shown in fig. 2, the video monitoring device monitors the traffic state and transmits the video data to the central processing system in real time;
and 2, step: the central processing system identifies the flow and the density of the road traffic flow at the moment according to the video data obtained by the video monitoring device, and utilizes a KKSW model to simulate and calculate the relationship between the state of the main road traffic flow and the flow rate of the vehicle exiting from the outlet, so that the following conditions are known: under the condition that the current main road flow rate is 1200pcu/h, the main road traffic flow becomes synchronous flow (namely, a slow running state) when the exit traffic flow rate is 300pcu/h, and the main road traffic flow becomes blocked flow (namely, a congestion state) when the entrance/exit traffic flow rate is 500 pcu/h;
and 3, step 3: the central processing unit obtains the maximum flow rate of 300pcu/h for releasing at the roadside outlet according to the condition of avoiding the congestion of the main road, obtains a gate control scheme for releasing one vehicle every 12 seconds, and then transmits the control scheme to gate control equipment at the roadside outlet;
and 4, step 4: the gate control equipment receives the signal of the central processing unit and releases the vehicle to enter the main road according to a specified speed;
it should be understood by those skilled in the art that the present invention is not limited to the exemplary embodiments described above, and any person skilled in the art can substitute or change the technical solution and concept of the present invention within the technical scope of the present invention.
Claims (8)
1. A roadside parking lot exit gate control method based on road vehicle flow is characterized by comprising the following steps:
collecting video data on an upstream road section of an outlet of a parking lot on the side of a main road;
identifying the flow and density information of the road traffic flow in real time according to the video data;
inputting the obtained flow and density information of the traffic flow into a traffic flow model to obtain the maximum number of vehicles which can drive in under the condition of avoiding main road congestion;
the exit gate of the parking lot on the road side is controlled according to the number of vehicles capable of entering the road at most.
2. The roadside parking lot exit gate control method based on the road traffic flow according to claim 1, characterized in that: the method comprises the following steps:
step 1: the video monitoring device monitors the road traffic state in real time and sends video data to the central processing system;
step 2: the central processing system identifies the flow and the density of the road traffic flow at the moment according to the video data obtained by the video monitoring device;
and step 3: the central processing system inputs the flow and the density at the moment into a traffic flow model to obtain the maximum flow rate of the vehicles driven from the road side under the condition of avoiding traffic jam of the main road;
and 4, step 4: obtaining a release scheme of the roadside parking lot exit gate according to the maximum flow rate of the roadside driving vehicles, and issuing a control instruction to gate control equipment;
and 5: and (4) the gate control equipment positioned at the exit of the roadside parking lot receives the signal of the central processing system, and vehicles at the roadside exit are released to enter the main road according to the control scheme.
3. The method for controlling a roadside entrance and exit signal system considering a queuing length as claimed in claim 2, wherein: in step 3, the traffic flow model is a KKSW model based on three-phase traffic flow.
4. The method for controlling a roadside entrance/exit signal system considering the queue length as recited in claim 3, wherein: the implementation method of the KKSW model comprises the following steps:
1) judging lane changing conditions, namely judging whether the speed of the vehicle in front of the adjacent lane is greater than the current speed of the vehicle and meeting the safe distance conditions;
2) judging the synchronous flow interval, if the interval between the front vehicle and the rear vehicle is within the synchronous flow interval, continuously adjusting the speed of the rear vehicle to be matched with that of the front vehicle and having a certain probability of excessive acceleration, otherwise, gradually accelerating the rear vehicle to the expected speed under the condition that the front vehicle does not influence the rear vehicle;
3) if the distance between the front vehicle and the rear vehicle is smaller than the safety distance, the rear vehicle decelerates to the minimum speed capable of keeping safety;
4) and (4) stochastic slowing, namely, the vehicle decelerates automatically with a certain probability.
5. The method for controlling a roadside entrance and exit signal system considering the queuing length as claimed in claim 4, wherein: the method uses cellular automata to simulate the KKSW model.
6. The utility model provides a roadside parking lot export floodgate machine control system based on road vehicle flow which characterized in that: the system comprises a video monitoring device, a gate control device and a central processing system;
the video monitoring device is used for monitoring road traffic in real time and sending video data to the central processing system;
the gate control equipment is used for receiving a control scheme given by the central processing system and controlling an outlet in real time;
the central processing system firstly identifies the flow and the density of the traffic flow at the moment from the video data, and then inputs the flow and the density into a traffic flow model, so that the maximum release rate and the control scheme of the roadside exit gate can be obtained.
7. The roadside parking lot exit gate control system based on road traffic flow according to claim 6, wherein: the system comprises a video monitoring device and a plurality of gate control devices, wherein the video monitoring device is installed at the upper stream of an outlet of the roadside parking lot, and the gate control devices are installed at the outlet of the roadside parking lot.
8. The roadside parking lot exit gate control system based on road traffic flow according to claim 6, wherein: the central processing system identifies the flow and the density of the road traffic flow according to the real-time road video returned by the video monitoring device, inputs the flow and the density into a traffic flow model, simulates the maximum traffic flow which can drive into the main road at the moment, and thus, the optimal control scheme of the roadside parking lot exit can be obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593291.4A CN114926986A (en) | 2022-05-27 | 2022-05-27 | Roadside parking lot exit gate control method and system based on road vehicle flow |
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| CN202210593291.4A CN114926986A (en) | 2022-05-27 | 2022-05-27 | Roadside parking lot exit gate control method and system based on road vehicle flow |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002063696A (en) * | 2000-08-23 | 2002-02-28 | Sumitomo Electric Ind Ltd | Parking lot information providing system |
| JP2012118765A (en) * | 2010-12-01 | 2012-06-21 | Mitsubishi Heavy Ind Ltd | Parking lot usage management system, data management apparatus, usage control apparatus, control method, and program |
| JP2013080445A (en) * | 2011-10-05 | 2013-05-02 | Sumitomo Electric Ind Ltd | Preceding jam determination device, computer program, and preceding jam determination method |
| CN109584560A (en) * | 2018-12-20 | 2019-04-05 | 四川睿盈源科技有限责任公司 | A kind of traffic control adjusting method and system based on freeway traffic detection |
-
2022
- 2022-05-27 CN CN202210593291.4A patent/CN114926986A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002063696A (en) * | 2000-08-23 | 2002-02-28 | Sumitomo Electric Ind Ltd | Parking lot information providing system |
| JP2012118765A (en) * | 2010-12-01 | 2012-06-21 | Mitsubishi Heavy Ind Ltd | Parking lot usage management system, data management apparatus, usage control apparatus, control method, and program |
| JP2013080445A (en) * | 2011-10-05 | 2013-05-02 | Sumitomo Electric Ind Ltd | Preceding jam determination device, computer program, and preceding jam determination method |
| CN109584560A (en) * | 2018-12-20 | 2019-04-05 | 四川睿盈源科技有限责任公司 | A kind of traffic control adjusting method and system based on freeway traffic detection |
Non-Patent Citations (2)
| Title |
|---|
| 吕子文: "事故条件下髙速公路匝道系统交通流模拟研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 张羽西 等: "高速公路出入口匝道控制系统研究", 《中国交通信息化》 * |
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